Isolated attosecond pulse generation with the chirped two-color laser field |
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Authors: | Huiqin Tai Zhe Wang |
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Affiliation: | 1. School of Science, Wuhan Institute of Technology, Wuhan, P.R. China.;2. School of Physics and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, P.R. China. |
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Abstract: | We propose a scheme to generate isolated attosecond pulse using a linearly chirped two-color laser field, which includes a fundamental laser field and a weak infrared control laser field in the multicycle regime. The fundamental laser field consists of one linearly up-chirped and one linearly down-chirped pulses. The control pulse is chirped free. We compare the attosecond pulse generated in the chirped two-color field and the chirp-free field. It is found that an IAP can be generated even without carrier envelop phase stabilization in the chirped two-color laser field with a duration of 40 fs. We also discuss the influence of the relative intensity, relative phase, time delay, and chirping parameters on the generation of IAPs. |
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Keywords: | Isolated attosecond pulse chirp two-color field and supercontinuum |
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